Stages of Formation of Oil and Gas Industry in Ukraine. Economic journal of Lesya Ukrainka Volyn National University, [S. l.], v. 1, n. 9, p. 76–81, 2017. DOI: 10.29038/2411-4014-2017-01-76-81. Disponível em: https://echas.vnu.edu.ua/index.php/echas/article/view/134.. Acesso em: 3 may. 2024.